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"They were really physical, they got off the line and they were aggressive, but we kept our composure under those moments and managed to find the line."

The unforced errors and cheap penalties that marred their early season efforts have been drastically reduced, and the past two games have also seen the Warriors enjoy their fair share of luck.

They benefitted from good fortune when kicks rebounded off Knights players in the lead-up to Vatuvei crossing in the 23rd minute and Fusitu'a's second in the 49th minute, but an improved mind-set and greater intensity has helped them get the rub of the green.

"When you're competing hard you make your luck," he said. "That's what we believe and that's what we're doing at the moment.

"The bounce of the ball sometimes goes with you and sometimes goes against you and we've probably been getting a bit of luck lately."

They now eye a third-straight win when they host the struggling Sydney Roosters at Mt Smart Stadium on Sunday, but are sweating on the fitness of Vatuvei, who is in doubt with a hamstring strain.

The 15th-placed Roosters are a shadow of the team that claimed the minor premiership in each of the three past seasons, but McFadden insists the Warriors are not getting ahead of themselves.

"We're feeling good about our game. We can never get too carried away, it's only two wins now and there's a long way to go.

"But the positive thing is we feel confident in our game, we're getting that confidence and we've just got to keep working hard."